US7196331B2 - Detector module - Google Patents

Detector module Download PDF

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Publication number
US7196331B2
US7196331B2 US11/033,516 US3351605A US7196331B2 US 7196331 B2 US7196331 B2 US 7196331B2 US 3351605 A US3351605 A US 3351605A US 7196331 B2 US7196331 B2 US 7196331B2
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US
United States
Prior art keywords
detector
units
collimator
module
carrier plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US11/033,516
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English (en)
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US20050161608A1 (en
Inventor
Bjoern Heismann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Healthcare GmbH
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Siemens AG
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Publication date
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Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEISMANN, BJOERN
Publication of US20050161608A1 publication Critical patent/US20050161608A1/en
Application granted granted Critical
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Assigned to SIEMENS HEALTHCARE GMBH reassignment SIEMENS HEALTHCARE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS AKTIENGESELLSCHAFT
Expired - Fee Related legal-status Critical Current
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
    • G01T1/164—Scintigraphy
    • G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
    • G01T1/1648—Ancillary equipment for scintillation cameras, e.g. reference markers, devices for removing motion artifacts, calibration devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
    • H01L27/144—Devices controlled by radiation
    • H01L27/146—Imager structures
    • H01L27/14643—Photodiode arrays; MOS imagers
    • H01L27/14658—X-ray, gamma-ray or corpuscular radiation imagers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph

Definitions

  • the invention generally relates to a detector module for producing an X-ray detector for an X-ray computed tomograph.
  • a detector module is known from DE 101 58 021 A1.
  • a multiplicity of such detector modules are fitted next to one another on a frame together with collimator elements matched respectively thereto.
  • pins are provided on the detector module that engage during mounting in cutouts on the collimator element that correspond thereto. Because of manufacturing tolerances, it can happen that the collimator sheets are not precisely aligned with the sensor elements of the detector modules. Consequently, an undesired measuring inaccuracy can result.
  • DE 197 53 268 A1 describes a detector for an X-ray computed tomograph.
  • the collimator sheets forming the collimator are adjusted relative to one another by using spacers of comb-like design.
  • the known detector requires a high outlay on production. Again, in this case, there can be an inaccurate alignment of the collimator sheets with reference to sensor elements combined to form detector units.
  • an object of an embodiment of the invention may be to specify a detector module that permits the production of a precise detector, and preferably even as precise a detector as possible for an X-ray computed tomograph.
  • the detector module may permit the detector to be mounted as simply and quickly as possible, and/or may be easy to handle.
  • detector units are positioned on the carrier plate by use of a collimator element.
  • the collimator element is a constituent of the detector module. An inaccurate alignment is avoided by the collimator module being used for positioning the detector units accurately.
  • the collimator element may be expediently produced from metal sheets extending in the z-direction and/or in the phi-direction.
  • the metal sheets can be held at a prescribed spacing from one another by using suitable spacers that may be produced from plastic, for example.
  • the collimator element may span the detector units like a bridge in the z-direction. It is thereby possible, firstly, to connect the collimator element to the carrier plate and, subsequently, to fix the detector units on the carrier plate with the precise positioning prescribed by the collimator element.
  • the collimator element may be advantageously connected to the detector units by using an adhesive. This facilitates the handling of the prescribed detector modules.
  • the detector units and the collimator element may be mounted on the carrier plate.
  • the carrier plate can be a printed circuit board.
  • the printed circuit board can be provided with contacts and/or conductor structures for connecting the detector units to a downstream electronic evaluation unit.
  • a detector for an X-ray computed tomograph may be provided with a number of detector modules according to an embodiment of the invention, arranged next to one another in the phi-direction.
  • a detector can be mounted easily and quickly.
  • the detector modules can be fitted on a detector frame at a prescribed angle to one another.
  • Mutually corresponding devices for fitting the detector modules on the detector frame in an accurately positioned fashion can be provided on the detector frame and on the detector module. These devices can include, for example, pins and cutouts corresponding thereto.
  • FIG. 1 shows a side view of a detector module according to an embodiment of the invention, without collimator element
  • FIG. 2 shows a plan view in accordance with FIG. 1 .
  • FIG. 3 shows a side view of a detector module according to an embodiment of the invention.
  • FIGS. 1 and 2 show a detector module without collimator element.
  • a number of detector elements 2 are held one behind another on a printed circuit board 1 in a column extending in a z-direction.
  • a width of the column in the phi-direction is given in essence by the width of a detector element 2 .
  • a length of the column in the z-direction follows from the sum of the lengths of the detector elements 2 arranged one behind another.
  • Each of the detector elements 2 includes a multiplicity of sensor elements 3 .
  • the sensor elements 3 form a matrix that is formed from columns extending in the z-direction, and rows extending in a phi-direction.
  • the detector element 2 advantageously include n ⁇ 8 sensor elements 3 in the z-direction, and n ⁇ 8 sensor elements in the phi-direction, n being a whole number.
  • a detector element 2 can thus include 64, 256, etc. sensor elements 3 .
  • the detector elements 2 may be respectively separated from one another by slots 4 .
  • the sensor elements 3 can be produced, for example, from a scintillator ceramic such as gadolinium oxysulfide.
  • the sensor elements 3 may be mounted in this case on a photodiode array 5 .
  • contact elements 6 may be provided that are connected to conductor tracks or the like (not shown here in more detail).
  • the reference numeral 7 denotes, for example, CMOS modules with the aid of which the signals supplied by the photodiode arrays 5 can be digitized.
  • the reference numeral 8 denotes a plug for connecting a downstream electronic evaluation unit (not shown here).
  • FIG. 3 shows a schematic side view of a detector module according to an embodiment of the invention.
  • a collimator element 9 may span the detector elements 2 in a fashion similar to a bridge.
  • the collimator element 9 may include collimator sheets (not shown in more detail here) that can be produced from molybdenum, for example.
  • the collimator sheets may be arranged such that they can engage in the slots 4 of the detector elements 2 .
  • the detector module can be mounted as follows: firstly, the detector units 2 may be plugged into the collimator element 9 such that the collimator sheets engage in the slots 4 . This creates a more precise alignment of the sensor elements 3 . Subsequently, the cavities remaining between the collimator sheets can be sealed with the aid of a synthetic resin, for example, in order to fix the detector units 2 . The compact unit thus formed can then be fastened on the printed circuit board 1 via supports 10 extending from the collimator unit 9 . Finally, the contact elements 6 can be brought into contact with conductor tracks provided in the printed circuit board 1 .
  • Such a detector module can be fitted on a frame in order to construct a detector for an X-ray computed tomograph. Cutouts can be provided on the detector module, and pins can be provided on the frame in a conventional manner for the purpose of positioning on the frame. Of course, it is also possible to provide other devices/methods for precise positioning of the detector module on the frame.
  • the proposed detector modules may be positioned next to one another in the phi-direction on the frame with the aid of the positioning devices, and then fixed. It is particularly easy to mount such a detector. A precise alignment of the sensor elements 3 with reference to the collimator elements 9 may be provided by the proposed detector module.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Optics & Photonics (AREA)
  • Pulmonology (AREA)
  • Molecular Biology (AREA)
  • Theoretical Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Toxicology (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Analytical Chemistry (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Biochemistry (AREA)
  • Computer Hardware Design (AREA)
  • Immunology (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
US11/033,516 2004-01-12 2005-01-12 Detector module Expired - Fee Related US7196331B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004001688.7 2004-01-12
DE102004001688A DE102004001688B4 (de) 2004-01-12 2004-01-12 Detektormodul

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US20050161608A1 US20050161608A1 (en) 2005-07-28
US7196331B2 true US7196331B2 (en) 2007-03-27

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DE (1) DE102004001688B4 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060124856A1 (en) * 2004-11-29 2006-06-15 Bjoern Heismann Detector bar or detector formed from a number of detector bars, and computed-tomography unit with such a detector
US20060291616A1 (en) * 2005-06-08 2006-12-28 So Kitazawa Computerized tomography system
US8194410B2 (en) 2010-04-06 2012-06-05 Apple Inc. Printed circuit board sensor mounting and alignment
US8525119B2 (en) 2009-05-20 2013-09-03 Koninklijke Philips N. V. Detector array with pre-focused anti-scatter grid
US9064611B2 (en) 2010-11-30 2015-06-23 Siemens Aktiengesellschaft 2D collimator for a radiation detector and method for manufacturing such a 2D collimator
US9519069B2 (en) 2013-09-06 2016-12-13 General Electric Company Precision self-aligning CT detector sensors
US20180000433A1 (en) * 2016-06-30 2018-01-04 Toshiba Medical Systems Corporation X-ray detector, x-ray detector module, and x-ray ct apparatus
US9917133B2 (en) 2013-12-12 2018-03-13 General Electric Company Optoelectronic device with flexible substrate
US9935152B2 (en) 2012-12-27 2018-04-03 General Electric Company X-ray detector having improved noise performance
US10732131B2 (en) 2014-03-13 2020-08-04 General Electric Company Curved digital X-ray detector for weld inspection

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354497A1 (de) * 2003-11-21 2005-06-30 Siemens Ag Detektor für ein Tomografie-Gerät
DE102007038980B4 (de) * 2007-08-17 2010-08-26 Siemens Ag Detektormodul, Strahlungsdetektor und Strahlungserfassungseinrichtung
WO2010007544A1 (en) * 2008-07-14 2010-01-21 Koninklijke Philips Electronics N.V. Anti-scatter grid
DE102014216756A1 (de) 2014-08-22 2016-02-25 Siemens Aktiengesellschaft Verfahren zur Korrektur einer ersten Verteilung von ersten Intensitätswerten sowie ein Tomographiegerät
DE102014218462A1 (de) 2014-09-15 2016-03-17 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Kollimatormoduls und Verfahren zur Herstellung einer Kollimatorbrücke sowie Kollimatormodul, Kollimatorbrücke, Kollimator und Tomographiegerät
US10181493B2 (en) 2015-02-06 2019-01-15 Analogic Corporation Radiation detector system of radiation imaging modality
CN113984803A (zh) * 2021-10-28 2022-01-28 上海联影医疗科技股份有限公司 防散射组件、辐射成像组件和系统

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US4496842A (en) * 1981-11-26 1985-01-29 U.S. Philips Corporation Radiation detector
US4521689A (en) * 1983-02-24 1985-06-04 General Electric Company Modular radiation-detecting array
US4694177A (en) * 1984-11-02 1987-09-15 Kabushiki Kaisha Toshiba Radiation detector having high efficiency in conversion of absorbed X-rays into light
US4982096A (en) * 1988-01-06 1991-01-01 Hitachi Medical Corporation Multi-element radiation detector
JPH042989A (ja) 1990-04-20 1992-01-07 Toshiba Corp Ｘ線ｃｔ装置用検出器およびその製造方法
US5510622A (en) * 1994-07-21 1996-04-23 General Electric Company X-ray detector array with reduced effective pitch
US5592523A (en) * 1994-12-06 1997-01-07 Picker International, Inc. Two dimensional detector array for CT scanners
DE19727483A1 (de) 1996-06-28 1998-01-02 Shimadzu Corp Röntgenstrahl-CT-Festkörperdetektor
DE19753268A1 (de) 1996-12-26 1998-07-02 Gen Electric Kollimator und Erfassungseinrichtung für Computer-Tomographie-Systeme
US5991357A (en) * 1997-12-16 1999-11-23 Analogic Corporation Integrated radiation detecting and collimating assembly for X-ray tomography system
DE10158021A1 (de) 2000-11-27 2002-08-22 Toshiba Kk Detektoreinheit, Röntgen-Computer-Tomographie-Aufnahme- Vorrichtung, Röntgendetektor, und Verfahren zum Herstellen eines Röntgendetektors
US6552349B2 (en) * 1998-12-07 2003-04-22 Koninklijke Philips Electronics N.V. Detector with non-circular field of view
WO2003044563A1 (en) * 2001-11-20 2003-05-30 Philips Medical Systems Technologies Ltd. Ct detector-module having radiation shielding for the processing circuitry
US20030150994A1 (en) * 2000-09-19 2003-08-14 Andreas Freund Radiation detector comprising photodiodes and scintillators
US6658082B2 (en) * 2000-08-14 2003-12-02 Kabushiki Kaisha Toshiba Radiation detector, radiation detecting system and X-ray CT apparatus
US20040125915A1 (en) * 2002-10-23 2004-07-01 Yuuichirou Ueno Radiological imaging apparatus
US6760404B2 (en) * 1999-12-24 2004-07-06 Kabushiki Kaisha Toshiba Radiation detector and X-ray CT apparatus

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034148A (en) 1978-08-30 1980-05-29 Gen Electric Multi element, high resolution scintillator structure
US4496842A (en) * 1981-11-26 1985-01-29 U.S. Philips Corporation Radiation detector
US4521689A (en) * 1983-02-24 1985-06-04 General Electric Company Modular radiation-detecting array
US4694177A (en) * 1984-11-02 1987-09-15 Kabushiki Kaisha Toshiba Radiation detector having high efficiency in conversion of absorbed X-rays into light
US4982096A (en) * 1988-01-06 1991-01-01 Hitachi Medical Corporation Multi-element radiation detector
JPH042989A (ja) 1990-04-20 1992-01-07 Toshiba Corp Ｘ線ｃｔ装置用検出器およびその製造方法
US5510622A (en) * 1994-07-21 1996-04-23 General Electric Company X-ray detector array with reduced effective pitch
US5592523A (en) * 1994-12-06 1997-01-07 Picker International, Inc. Two dimensional detector array for CT scanners
DE19727483A1 (de) 1996-06-28 1998-01-02 Shimadzu Corp Röntgenstrahl-CT-Festkörperdetektor
US5965893A (en) 1996-06-28 1999-10-12 Shimadzu Corporation X-ray CT solid-state detector
US5799057A (en) 1996-12-26 1998-08-25 General Electric Company Collimator and detector for computed tomography systems
DE19753268A1 (de) 1996-12-26 1998-07-02 Gen Electric Kollimator und Erfassungseinrichtung für Computer-Tomographie-Systeme
US6134301A (en) 1996-12-26 2000-10-17 General Electric Company Collimator and detector for computed tomography systems
US5991357A (en) * 1997-12-16 1999-11-23 Analogic Corporation Integrated radiation detecting and collimating assembly for X-ray tomography system
US6552349B2 (en) * 1998-12-07 2003-04-22 Koninklijke Philips Electronics N.V. Detector with non-circular field of view
US6760404B2 (en) * 1999-12-24 2004-07-06 Kabushiki Kaisha Toshiba Radiation detector and X-ray CT apparatus
US6658082B2 (en) * 2000-08-14 2003-12-02 Kabushiki Kaisha Toshiba Radiation detector, radiation detecting system and X-ray CT apparatus
US20030150994A1 (en) * 2000-09-19 2003-08-14 Andreas Freund Radiation detector comprising photodiodes and scintillators
DE10158021A1 (de) 2000-11-27 2002-08-22 Toshiba Kk Detektoreinheit, Röntgen-Computer-Tomographie-Aufnahme- Vorrichtung, Röntgendetektor, und Verfahren zum Herstellen eines Röntgendetektors
US6587538B2 (en) 2000-11-27 2003-07-01 Kabushiki Kaisha Toshiba Detector unit, X-ray computer tomographic photographing device, X-ray detector, and X-ray detector manufacturing method
WO2003044563A1 (en) * 2001-11-20 2003-05-30 Philips Medical Systems Technologies Ltd. Ct detector-module having radiation shielding for the processing circuitry
US6982423B2 (en) * 2001-11-20 2006-01-03 Koninklijke Philips Electronics N.V. CT detector-module having radiation shielding for the processing circuitry
US20040125915A1 (en) * 2002-10-23 2004-07-01 Yuuichirou Ueno Radiological imaging apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060124856A1 (en) * 2004-11-29 2006-06-15 Bjoern Heismann Detector bar or detector formed from a number of detector bars, and computed-tomography unit with such a detector
US7728298B2 (en) * 2004-11-29 2010-06-01 Siemens Aktiengesellschaft Detector bar or detector formed from a number of detector bars, and computed-tomography unit with such a detector
US20060291616A1 (en) * 2005-06-08 2006-12-28 So Kitazawa Computerized tomography system
US8525119B2 (en) 2009-05-20 2013-09-03 Koninklijke Philips N. V. Detector array with pre-focused anti-scatter grid
US8194410B2 (en) 2010-04-06 2012-06-05 Apple Inc. Printed circuit board sensor mounting and alignment
US9064611B2 (en) 2010-11-30 2015-06-23 Siemens Aktiengesellschaft 2D collimator for a radiation detector and method for manufacturing such a 2D collimator
US9935152B2 (en) 2012-12-27 2018-04-03 General Electric Company X-ray detector having improved noise performance
US9519069B2 (en) 2013-09-06 2016-12-13 General Electric Company Precision self-aligning CT detector sensors
US9917133B2 (en) 2013-12-12 2018-03-13 General Electric Company Optoelectronic device with flexible substrate
US10732131B2 (en) 2014-03-13 2020-08-04 General Electric Company Curved digital X-ray detector for weld inspection
US20180000433A1 (en) * 2016-06-30 2018-01-04 Toshiba Medical Systems Corporation X-ray detector, x-ray detector module, and x-ray ct apparatus
US10729392B2 (en) * 2016-06-30 2020-08-04 Canon Medical Systems Corporation X-ray detector, X-ray detector module, and X-ray CT apparatus

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Publication number Publication date
DE102004001688B4 (de) 2010-01-07
US20050161608A1 (en) 2005-07-28
DE102004001688A1 (de) 2005-08-04

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